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.jf/i my@ I NA PETERS. FHDTDALITHUGRAPHER. WASHINGTON. D D

e v ,0' @uiten iat-es gate-at Eiern.

A A2, through the spring-valves Dl, D2, Da,&c. The piston being EDWARD n; conn AND ,HENRY s. COLE, 'or PAWTUQKET, eHoD ISLAND;

Letters Patent No. 79,730, dated July 7,

IMPROVEMENT IN STEAM FIRE-ENGINE.

To ALL wHoM 1T MAY coNcnnN:

Beit known that we, EDWARD It. Conn and HENRY S. Conn, ot- Pawtucket, county of Providence, and

State of Rhode Island','liave invented certain new and valuable Improvements in Steam Fire-'Engines ASuid improvements consist in the construction and arrangement of a force-pump'peculiarly' adapted for steamtire-engines.V A We assert that the perpendicularly-acting pump is the most desirable one for such purposes, and cite, as

tbe chief reason therefor, the fact that, while-in action, there is less motion to the 'engine than is the caservith engines using other forms of pump.

The advantages in overcoming useless motion in such ari-apparatus areobvious. The ehaiing wear of hose and suction is avoided, the rack and. strain upon wheels, axles, springs, and other auxiliary parts, are greatly lessened, and-consequently the engine is susceptible of longer service without replacement Vor repairs. To this may be' added the advantage of maintainin tion upon the piston or plunger and rod. l

To more properly and perfectly overcome useless motion inthe apparatus; to avoid complication; -to lessen g within the cylinder an equal and easily-compensated wear by fricexpense of manufacture; to. strengthen parts by new combination; yto'assist the working ofthe engine by natural principles' and to overcome the fault in lsteam"rireengines, known as ponding, our'invention is'intended, and, in practical eil'eo-t, accomplishes.

' To enable others skilled inthe art to make and use our invention, we will proceed to give, with the assistance ofv the dravvings, a full, clear, and true description thereof.

Figure 'Lrepresents a stcam.iii'eengine complete, containing our improvements,'marked with-distinctive 'letters corresponding with iig. 2.

Figure 2^represents-a section of our pumprsliowing wherein ourv improvement-and invention rest.

p A. represents n. cylinder, the interior of which is at once a .suction .and nl compressng-chamber.

`B'represents-the piston and rod.

B B represents a cylinder within'the cylinder A, in'whieh'thepistonf' moves up `and doivn.V It will be seen, at points marked B B1, and B D, Athat there are solid'rconnections between cylinder B B and inner walls of cylinder A.l The pistn B, in fact, forms a movable partition between the top, bottom, and oneside of the interior o'f cylinder'A-and the bottom and oppositer side of the same. The upper portion of the interior is marked A A; the lower, A A2. Without' tbcpresence of *the plungerorpiston B thes'e chambers would be in' one. i D Dreprcsents the suction or supply-pipe,vxnd; is, with the pipe 4C, constructed in one piece.4 This pipe leads from the base of the. air-chamber, a point considerably above the whole pump, and terminates at the supply-chamber D. Y

C 'represcnitsnthc cduction-pipe to air-chamber C C, into which forced ujater passes from either par't of the pump A; A1 or A through the spring-valves,-shoivn near thepartition B B1, and marked C1 and' C?. l

D represents the supply-chamber, from which water 4is drawn to supply either chamber above through spring-valves D', D2, D3, Zcc.. l

D Dl represents a vacuum-chamber, for maintaining l c, in a m'e'asure, a uniform-'suction at change of stroke. E represents the point at which forced water is delivered to tbe hose.

4lligu'r'e 3 represents the bottom-'olf the pump, and shows the spring-valves and dividing-partition B B2.- 'llbo operation of the pump is as follows:

Tho piston being raised, water is thereby drawn from the supply-chamber D4 into the inner and lower chamber depressed,` the Water then in chamber A A2 is chamber C C, thence 4to hose... The upper chamber, A. r through-valves D,v&c., and, by'tbe succeeding upward forced through spring-valve C"y into reduction-pipe C,.nir .A1, is filled by th'o downward suction of piston B bywate movement', thefwater sovdrawn is forced through springvaive 0*, and so on.

y'the interpesviton of plunger purposes speeiled.

Referring to our previous enumeration of adventngcs gained by us throughput' improvement, we' will now consider each in turn. l

` We more perfectly overcome useless motion by the arch and. weight of tbesuction-pipe D D2, and the column of tva-ter within. This is utlizxed by our peculiar 'zii1-nngement,'end is shown in g. 1.

We lavoid complication,` and thereby lessen expense of manufacturing, by the obviously simple m'angement of parte, and by the casting in one piece of the cylinder A and the interior cyliidc'nB B, and also by casting inone p iece tlhe pipes C endfD D, ns shown .in figs. 1 and 2, between the oir-chamber C C and the pump.

We strengthen the pump and auxiliary parts by the u'nity of pipes C und D D2 as `by their form and position they erefin elect, a. perfect truss and brace, greatly adding to the solidity and rlness'of the pump.

' We assist'the pnnip by'naturel forces, by elevztlzingpur suction-pipe nbove the pump,`.nd continued, as-

sbmvn in g.'1, thus forming asiphon, in eleet, tono inconsideruble extent, which tends to lessen tlio drnughting laberof the pump. v v

We obvietc practically the Iault of -pounding, byitbe elevational' the suction-pipe above ythe pump, by

'which means, the pump, after being started, isi-'constantly or continually-charged, and -the po'wer applied is exhausted by directvacltion upon the Water instead of' upon a vacuum, es in the case of a. pounding puinp. 4

Having thus deserbedour invention, we clnirn, enddesire toy secure by Letters Patent- 1. The pump-cylinder A, constructed substantially as described, forming thechembcrs A A1 and A2 by 2. yThe elevated .induction-pipe D Dende-duction-pipe C, connected 4substantially as described, for the 3. A' lhe arrangement of the Siphon-formed induction-pipe D D2 in relation to the y:tir-chfftiznber C C, {ivater- Way'D D, and operativepm-ts Av B and AYAZ und B 13'allsubstentially as shevvn and described. v EDWARD Rg COLE, HENRY, S. COLE. Witnesses:

Ro'AI'. LEE, GEO. A. CARPENTER. 

